CN114103889A - Automatic leveling system and method for carriage body of ultra-high-definition video relay car - Google Patents
Automatic leveling system and method for carriage body of ultra-high-definition video relay car Download PDFInfo
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- CN114103889A CN114103889A CN202111272683.2A CN202111272683A CN114103889A CN 114103889 A CN114103889 A CN 114103889A CN 202111272683 A CN202111272683 A CN 202111272683A CN 114103889 A CN114103889 A CN 114103889A
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- leveling system
- automatic leveling
- level
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- bead
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
Abstract
An automatic leveling system and method for a carriage body of an ultra-high-definition video relay vehicle relate to the technical field of vehicles, wherein the automatic leveling system comprises a plurality of supporting bodies (20), at least three gradienters (30) and a control device. The carriage body leveling system levels the bottom plate by adjusting the height of each support body, and the two level instruments intersected in the length direction detect the levelness of two stable triangles by intersecting the length direction of one level instrument and the length direction of the other two level instruments, so that after leveling, the reference surface of the workbench is closer to the horizontal, and the position of a metal liquid bead can be detected by a probe electrode pair, so that the height of the support body is automatically adjusted, the labor is reduced, and errors are avoided.
Description
Technical Field
The invention relates to the field of vehicles, in particular to an automatic leveling system and method for a carriage body of an ultra-high-definition video relay vehicle.
Background
The vehicle as the working platform is provided with a large number of precision instruments, a horizontal working platform is needed when the precision instruments run so as to ensure the normal running of the precision instruments, but the vehicle as the working platform cannot ensure the ground level when the vehicle is used on site, so that the vehicle needs to be leveled on site when the vehicle is actually used so as to ensure the normal running of the precision instruments.
Disclosure of Invention
The invention aims to provide an automatic high-definition video relay van carriage body leveling system and method capable of automatically and accurately leveling a vehicle.
In view of this, the first aspect of the present invention provides an automatic leveling system for a carriage body of an ultra high definition video relay truck, the carriage body including a workbench reference surface, the automatic leveling system including: a plurality of supports, at least three levels and a control device;
the plurality of supporting bodies are arranged at the bottom of the vehicle body, are fixedly connected with the vehicle body and are used for supporting the vehicle body; the supporting bodies are arranged to be of a telescopic structure, so that the vehicle body is leveled by adjusting the length of each supporting body;
the length direction of each of the at least three gradienters is parallel to the reference surface of the workbench, the length direction of one gradienter is intersected with the length directions of the other two gradienters, and the intersection point is in the height direction of the intersection point;
the level gauge includes: the device comprises a closed tube, a metal liquid bead arranged in the closed tube, and a plurality of probe electrode pairs and a central electrode pair which are used for sensing the position of the metal liquid bead;
the central electrode pair is arranged on the closed pipe at the middle position of the closed pipe in the length direction;
the probe electrode pairs are symmetrically arranged on the closed tubes at two sides of the central electrode pair;
two electrodes of each electrode pair are symmetrically arranged at the top and the bottom of the closed tube;
the control device adjusts the heights of the supporting bodies at different positions based on the positions of the metal liquid beads in the closed pipe so as to level the carriage body.
Optionally, the closed tube is filled with an insulating liquid.
Optionally, the worktable reference surface includes a frame body, and a plurality of intersection points are formed on the frame body; each support body is fixed on the intersection point of the frame body; the intersection point is in the height direction of the support body.
Optionally, the vehicle body is a cuboid;
the number of the supporting bodies is 4, and the supporting bodies are arranged on the cross points which are nearest to the four corners of the workbench datum plane.
Optionally, there are 3 gradienters, where one of the gradienters is arranged along a diagonal direction formed between the intersections closest to the four corners of the reference surface of the workbench; and the other two gradienters are arranged along the long edge direction of the workbench reference surface.
Optionally, the number of probe electrode pairs closer to the central electrode is denser.
Optionally, the probe electrode pairs are equidistantly arranged.
Optionally, the cross section of the level is elliptical ring; the major diameter of the inner circle of the elliptical ring shape is 4-6 mm; the minor diameter of the inner circle of the elliptical ring shape is 2-3 mm; the probe extends out of the inner wall of the sleeve by 0.5-1 mm.
Optionally, the metal bead is a mercury bead.
Optionally, the electrode on the bottom surface in the center electrode pair is recessed from the center by a preset angle.
Optionally, the system further comprises a work panel for displaying the tilt status of each level.
Optionally, the support body is a hydraulic rod.
Optionally, the control means comprises a stepper motor.
A second aspect of the present invention provides an ultra high definition video relay truck carriage body automatic leveling method, which uses the leveling system provided by the first aspect of the present invention for leveling.
The carriage body leveling system levels the bottom plate by adjusting the height of each support body, and the two level instruments intersected in the length direction detect the levelness of two stable triangles by intersecting the length direction of one level instrument and the length direction of the other two level instruments, so that after leveling, the reference surface of the workbench is closer to the horizontal, and the position of a metal liquid bead can be detected by a probe electrode pair, so that the height of the support body is automatically adjusted, the labor is reduced, and errors are avoided.
The technical scheme of the invention has the following beneficial technical effects:
additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a relay truck in a driving state;
FIG. 2 is a schematic structural view of the carriage body in a working state;
FIG. 3 is a schematic structural view of a level of an example of the first embodiment;
FIG. 4 is a schematic top view of an automatic leveling system according to an embodiment of the first embodiment;
FIG. 5 is a schematic structural view of a level according to another example of the first embodiment;
FIG. 6 is a perspective view of an automatic leveling system according to an example of the first embodiment;
FIG. 7 is a schematic top view of an automatic leveling system according to another embodiment of the first embodiment;
FIG. 8 is a schematic cross-sectional view of the first embodiment of the level of FIG. 3;
FIG. 9 is a schematic structural view of a level according to yet another example of the first embodiment;
fig. 10 is a schematic structural diagram of a display panel according to an example of the first embodiment.
Icon: 10-a vehicle body; 11-a table datum plane; 12-a frame body; 20-a support; 30-a level gauge; 31-a closed tube; 32-metal beads; 33-center electrode pair: 34-probe electrode pair; 40-a working panel; 41-left indicator light, 42-middle indicator light, 43-right indicator light; 50-vehicle head; 61-automatic leveling key; 62-manual key.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In the drawings, a schematic diagram of a layer structure according to an embodiment of the application is shown. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The vehicle as the working platform is provided with a large number of precise instruments, such as missile launching vehicles, radar measuring vehicles and the like, the ultra-high-definition video relay vehicle is only one of the vehicles, and the automatic leveling system is also suitable for other vehicles as the working platform besides the ultra-high-definition video relay vehicle.
Referring to fig. 1, a head 50 of the ultra-high definition video relay car is detachably connected with a car body 10, and precision instruments used for relay are located in the car body 10, so that in a running state, a support body 20 is retracted to avoid influencing running. When the vehicle needs to stop to a specific place for rebroadcasting, the vehicle head 50 is separated from the vehicle body 10, the supporting body 20 (see fig. 2) is laid down to level the vehicle body 10, and the bottom plate of the vehicle body 10 is adjusted to be level by adjusting the height of the supporting body 20.
First embodiment
Referring to fig. 3, the present embodiment provides an ultra high definition video relay truck carriage body auto leveling system, a truck body 10 includes a workbench reference surface 11, and the auto leveling system includes: a plurality of supports 20, at least three levels 30 and control means; the plurality of supporting bodies 20 are arranged at the bottom of the vehicle body 10, fixedly connected with the vehicle body 10 and used for supporting the vehicle body 10; the supporting bodies 20 are provided in a telescopic structure so as to level the vehicle body 10 by adjusting the length of each supporting body 20; the length direction of each of the levels 30 in the at least three levels 30 is parallel to the table reference surface 11, and the length direction of one level 30 intersects the length directions of the other two levels 30, and the intersection point is in the height direction of the intersection point; the level gauge 30 includes: a closed tube 31, a metal liquid bead 32 arranged in the closed tube 31, and a plurality of probe electrode pairs 34 and a central electrode pair 33 for sensing the position of the metal liquid bead 32; the central electrode pair 33 is arranged on the closed tube at the middle position of the closed tube 31 in the length direction; the probe electrode pairs 34 are symmetrically arranged on the closed tubes at two sides of the central electrode pair 33; two electrodes of each electrode pair are symmetrically arranged at the top and the bottom of the closed tube; the control device adjusts the height of the support body 20 at different positions based on the position of the metal liquid bead 32 in the closed pipe 31 so as to level the carriage body.
The metal liquid bead is communicated with the electrode pairs above and below the metal liquid bead, the communicated electrode pairs indicate the current position of the metal liquid bead, each electrode pair is connected with the control device through a lead, and the control device adjusts the height of the support body 20 based on the position of the metal liquid bead.
The leveling system of the vehicle body 10 of the present embodiment levels the floor by adjusting the height of each support body 20, and makes the two levels 30 crossing in the length direction detect the levelness of two stable triangles (see fig. 4, the angle of view of fig. 4 is the arrow direction in fig. 2) by crossing the length direction of one level 30 and the length direction of the other two levels 30, so that the table reference surface 11 is closer to horizontal after leveling. And the position of the metal liquid bead can be detected by the probe electrode pair 34, so that the height of the support body is automatically adjusted, the labor is reduced, and errors are avoided.
In an alternative embodiment, the probe of the probe electrode is rounded without burrs so as to prevent liquid metal from remaining when the metal bead passes.
In an alternative embodiment, the closed tube 31 is filled with an insulating liquid. Wherein, the insulating liquid can be castor oil, silicon oil or other synthetic artificial insulating oil. Preferably, the insulating oil with good insulating property and large specific gravity is selected, and the insulating liquid has small infiltration on metal so as to ensure that the metal liquid beads keep better approximately spherical shape. The inner wall of the sleeve is made of insulating materials.
Referring to fig. 3, in an alternative embodiment, the support body 20 is a hydraulic leg or rod, so that the height of the support body 20 is controlled by hydraulic pressure. In addition, the hydraulic legs or hydraulic rods are locked by locking devices after being adjusted to a proper height. The control means includes a stepping motor to adjust the height of the support body 20 by the stepping motor. In the non-overload condition, the rotation speed and stop position of the stepping motor only depend on the frequency and pulse number of the pulse signal and are not influenced by the load change, when the stepping driver receives a pulse signal, the stepping driver drives the stepping motor to rotate by a fixed angle called a step angle according to a set direction, and the rotation of the stepping motor is operated by one step at the fixed angle. The angular displacement can be controlled by controlling the number of pulses, so that the aim of accurate positioning is fulfilled; meanwhile, the rotating speed and the rotating acceleration of the motor can be controlled by controlling the pulse frequency, so that the aim of speed regulation is fulfilled.
Referring to fig. 3, on the basis of the above embodiment, the probe electrode pairs 34 are disposed at equal intervals, and the adjustment in the control program is smaller as the distance from the center electrode is closer, so that when the metal bead is connected to the probe electrode pair 34 that is farther from the center electrode pair 33, the adjustment range of the stepping motor is larger each time, and when the metal bead is connected to the probe electrode pair 34 that is closer to the center electrode pair 33, the adjustment range of the stepping motor is smaller each time, so as to ensure that the carriage body is accurately adjusted to the horizontal state.
Referring to fig. 5, the present embodiment is different from the previous embodiment in that the number of probe electrode pairs 34 is denser the closer the probe electrode pairs 34 are to the center electrode. And the adjustment in the control program is smaller when the adjustment is closer to the central electrode, so that when the metal liquid bead is connected with the probe electrode pair 34 which is far away from the central electrode pair 33, the adjustment amplitude of the stepping motor is large each time, and when the metal liquid bead is connected with the probe electrode pair 34 which is close to the central electrode pair 33, the adjustment amplitude of the stepping motor is small each time, and the times are many, so as to ensure that the carriage body is adjusted to be in a horizontal state more accurately.
Referring to fig. 6, in an alternative embodiment, the worktable reference plane 11 includes a frame body 12, and a plurality of intersection points (see a in fig. 6) are formed on the frame body 12; each support 20 is fixed to the frame body 12 at the intersection point; the intersection point is in the height direction of the support body 20. The intersection point is located at the height of the intersection point to more stably fix the level gauge 30, and the horizontal base line of the level gauge 30 can be made longer, further making the table reference surface 11 closer to horizontal after leveling. Two I-beams can be used as main beams, a plurality of cross beams are fixedly connected between the two main beams to form a frame body 12, and at least the upper part of the frame body 12 is covered with a floor to form a workbench datum plane 11.
Referring to fig. 7 in an alternative embodiment, the vehicle body 10 may be selected as a rectangular parallelepiped; the number of the supports 20 may be 4, and the supports 20 are disposed at the intersections closest to the four corners of the table reference surface 11. The gradienters 30 can be provided with 3, wherein the edge of one gradienter 30 is arranged in the diagonal direction of the intersection point closest to the four corners of the worktable reference surface 11; two other levels 30 are provided along the longitudinal direction of the table reference surface 11. This arrangement maximizes the level baseline of the level gauge 30, making the table datum 11 more nearly level after leveling.
In an alternative embodiment, the metal bead 32 is a mercury bead, when the metal bead is selected as a mercury bead, the mercury bead is easy to scatter to form a plurality of small mercury beads when the vehicle moves, and before leveling, the level needs to be treated, for example, one end of the level is lifted and left standing for about 1 minute, so that the plurality of small mercury beads are synthesized into the whole mercury bead and then restored to the original position for use.
In an alternative embodiment, the level 30 is level with the metal bead 32 connected to the middle electrode pair; when the level gauge 30 is tilted, the metal bead 32 slides to the lower side and is connected to the probe electrode pair 34 on the lower side, and the tilt state of the table reference surface 11 is obtained by detecting the state of the level gauge 30, and the height of the support 20 is adjusted as much as possible so that the table reference surface 11 is leveled.
In an alternative embodiment, the bottom electrode of the center electrode pair 33 is recessed from the center by a predetermined angle, which is optionally greater than 0 ° and less than 2 °, to allow for some tilt error, and the top electrode is also recessed by 0-2 ° as appropriate.
Referring to FIG. 8, in an alternative embodiment, the level 30 is oval annular in cross-section; the major diameter of the inner circle of the elliptical ring shape is 4-6 mm; the minor diameter of the inner diameter of the elliptical ring is 2-3 mm; the diameter of the probe electrode is 0.5-1mm, the length of the closed tube 31 is 5-20cm, the probe extends out of the inner wall of the sleeve by 0.5-1mm, and the distance between the central lines of adjacent electrode pairs in the probe electrode pair 34 is 2-3 mm. Preferably, the diameter of the liquid bead is about 2.5mm, the short diameter is 2.5mm, the long diameter is 5mm, the diameter of the probe electrode is 0.75, the length of the sleeve is 10, the probe extends out of the inner wall of the sleeve by 0.5mm, and the distance is 2.5 mm.
Referring to fig. 3 and in fig. 8, in an alternative embodiment, the pair of center electrodes 33 is a wire embedded in the closed tube of the cannula and having a width of about 2mm, with the inner surface of the wire slightly protruding from the inner surface of the cannula by about 0.5 mm.
Referring to FIG. 9, in an alternative embodiment, the center electrode pair 33 is comprised of two probe electrodes, and the probe electrodes of the center electrode pair 33 have a diameter of about 0.75-1.5mm, optionally 0.75 mm.
Referring to fig. 10, in an alternative embodiment, the system further comprises a work panel 40 for displaying the inclination of each level 30, in the form of a button, and for height adjustment of the support 20. Wherein the automatic leveling system is started by clicking an automatic leveling button. Generally, when the road surface condition is better, namely the large-scale leveling is not needed, the automatic leveling is used. For example, the top row of indicator lights corresponds to the top row of levels 30 in FIG. 5, and the diagonal indicator lights corresponds to the diagonal levels 30 in FIG. 5; the bottom row of indicator lights correspond to the bottom row of levels 30 in FIG. 5; the middle indicator lamp 42 of each row is electrically connected to the center electrode pair 33, the left indicator lamp 41 is electrically connected to the right probe electrode pair 34, and the right indicator lamp 43 is electrically connected to the probe electrode pair 34. And the arrangement of the indicator lights on the working panel 40 is the same as the placement position of the actual level gauge 30, so that an operator can more intuitively obtain the inclined state of the working table reference surface 11 and conveniently adjust the levelness of the working table reference surface 11.
When the road surface condition is poor, the rough leveling can be performed in a manual leveling mode, the rough leveling is realized through a manual key 62, then the automatic leveling is performed, and the automatic leveling is realized through an automatic leveling key 61. In fig. 10, the keys in the first row, the second row, the third row and the fourth row on the right side are respectively used for controlling the movement of the support body 20 at the upper left corner, the upper right corner, the lower left corner and the lower right corner, and for example, the left side can be used for controlling the ascending, the middle control for descending and the right side for emergency stop.
A second embodiment.
The embodiment provides an automatic leveling method for a carriage body of an ultra-high-definition video relay broadcasting vehicle, and the leveling system provided by the first embodiment of the invention is used for leveling.
In a specific embodiment, this embodiment takes the setting manner of the level in fig. 7 as an example to explain the adjustment sequence, and during leveling, the level on the diagonal and the support bodies 20 at the two ends are leveled first, then the upper level on one long side is leveled, and finally the upper level on one long side is leveled.
In an alternative embodiment, the support body is controlled to be self-leveling using a stepper motor so that the leveling is more accurate.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (14)
1. An ultra-high definition video relay car carriage body automatic leveling system, the car body (10) includes workstation datum plane (11), characterized in that, automatic leveling system includes: a plurality of supports (20), at least three levels (30) and a control device;
the plurality of supporting bodies (20) are arranged at the bottom of the vehicle body (10), are fixedly connected with the vehicle body (10) and are used for supporting the vehicle body (10); the supporting bodies (20) are arranged to be telescopic structures so as to level the vehicle body (10) by adjusting the length of each supporting body (20);
the length direction of each level (30) in the at least three levels (30) is parallel to the workbench datum plane (11), the length direction of one level (30) is intersected with the length directions of the other two levels (30), and the intersection point is in the height direction of the intersection point;
the level gauge (30) comprises: the device comprises a closed tube (31), a metal liquid bead (32) arranged in the closed tube (31), and a plurality of probe electrode pairs (34) and a central electrode pair (33) for sensing the position of the metal liquid bead (32);
the central electrode pair (33) is arranged on the closed pipe at the middle position of the closed pipe (31) in the length direction;
the probe electrode pairs (34) are symmetrically arranged on the closed tubes at two sides of the central electrode pair (33);
two electrodes of each electrode pair are symmetrically arranged at the top and the bottom of the closed tube;
the control device adjusts the height of the support body (20) at different positions based on the position of the metal liquid bead (32) in the closed pipe (31) so as to level the carriage body.
2. Automatic leveling system according to claim 1, wherein the closed tube (31) is filled with an insulating liquid.
3. The automatic leveling system according to claim 1, wherein the table reference surface (11) comprises a frame body (12), the frame body (12) having a plurality of intersection points formed thereon;
each support (20) is fixed to the intersection of the frame body (12);
the intersection point is in the height direction of the support body (20).
4. The automatic leveling system of claim 3,
the vehicle body (10) is a cuboid;
the number of the supporting bodies (20) is 4, and the supporting bodies (20) are arranged at the cross points which are nearest to the four corners of the workbench datum plane (11).
5. The automatic leveling system of claim 4,
the number of the gradienters (30) is 3, wherein one gradienter (30) is arranged along the diagonal direction formed between the nearest cross points to the four corners of the workbench datum plane (11);
the other two gradienters (30) are arranged along the long side direction of the workbench datum plane (11).
6. The automatic leveling system of claim 1, wherein the number of probe electrode pairs (34) closer to the center electrode is denser.
7. The automatic leveling system of claim 1, wherein the pair of probe electrodes (34) are equidistantly disposed.
8. Automatic leveling system according to claim 6 or 7, wherein the level (30) is oval annular in cross-section;
the major diameter of the inner circle of the elliptical ring shape is 4-6 mm;
the minor diameter of the inner circle of the elliptical ring shape is 2-3 mm;
the probe extends out of the inner wall of the sleeve by 0.5-1 mm.
9. The automatic leveling system of claim 8, wherein the metal bead (32) is a mercury bead.
10. The automatic leveling system according to any one of claims 1 to 7, wherein the electrode of the pair of central electrodes (33) located on the bottom surface is recessed from the center by a predetermined angle.
11. The automatic leveling system according to any one of claims 1 to 7, further comprising a work panel (40) for displaying a tilt status of each level (30).
12. Automatic leveling system according to one of the claims 1-7, characterized in that the support body (20) is a hydraulic lever.
13. The automatic leveling system of one of claims 1 to 7 wherein the control device comprises a stepper motor.
14. An ultra high definition video relay van carriage body automatic leveling method, characterized in that leveling is performed using the leveling system according to any one of claims 1 to 12.
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| CN202111272683.2A CN114103889B (en) | 2021-10-29 | 2021-10-29 | Automatic leveling system and method for carriage body of ultra-high definition video rebroadcasting vehicle |
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| CN202111272683.2A CN114103889B (en) | 2021-10-29 | 2021-10-29 | Automatic leveling system and method for carriage body of ultra-high definition video rebroadcasting vehicle |
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